Following 600,000 pre-orders and impressive lines, Apple today announced that the companyt had sold over 1.7 million iPhone 4 units. In other words, since releasing the iPhone 4 to customers on June 24 (and including the pre-orders that were delivered in the mail), the device was selling at a rate of nearly seven per second.

“This is the most successful product launch in Apple’s history,” Steve Jobs, Apple’s CEO, said in the press release. He also apologized to customers who have been turned away because Apple is having trouble meeting demand.

As of Monday morning, an iPhone 4 ordered from Apple’s U.S. Website won’t ship for three weeks. If you’re trying to find one, Apple retail stores are probably the best bet, as they should receive steady trickle for customers on a first-come, first-serve basis.

In other news, Techxilla is hosting a fairly impressive cache of iPhone 4 destruction videos, including the following snarky-but-clever video from the cool cats at Blendtec…